net: use NETDEV_TX_OK instead of 0 in ndo_start_xmit() functions

This patch is the result of an automatic spatch transformation to convert
all ndo_start_xmit() return values of 0 to NETDEV_TX_OK.

Some occurences are missed by the automatic conversion, those will be
handled in a seperate patch.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/sun3lance.c b/drivers/net/sun3lance.c
index 534dfe3..0ca4241 100644
--- a/drivers/net/sun3lance.c
+++ b/drivers/net/sun3lance.c
@@ -562,7 +562,7 @@
 		netif_start_queue(dev);
 		dev->trans_start = jiffies;
 
-		return 0;
+		return NETDEV_TX_OK;
 	}
 
 
@@ -648,7 +648,7 @@
 
 	local_irq_restore(flags);
 
-	return 0;
+	return NETDEV_TX_OK;
 }
 
 /* The LANCE interrupt handler. */